Bearing 'noise' phenomenon is how to produce?

Bearing 'noise' phenomenon is how to produce? （ 1) Due to load several qualitative change roller vibration: when a load on a bearing radial load, the number of rolling element bearing load will be a slight change in the operation, which make up the direction of the load deviation. The resulting vibration is not to prevent, axial preload to ease, but after loading in each rolling body ( Do not apply to the cylindrical roller bearing) 。 （ 2) The damage: because of the small operation or device error, local bearing raceway and rolling body may be damaged. In operation, rolled the damaged bearing parts will produce a particular vibration frequency. Bearing vibration frequency analysis are recognized the damaged parts. This principle has been used in the condition monitoring equipment, used to detect bearing damage. （ 3) The precision of the related parts: between the bearing ring and bearing or the shaft under the condition of the reamer, bearing ring with adjacent components are likely to match the shape and deformation. If appear deformation, can produce vibration in the operation. （ 4) Pollutants: if operating in the environmental pollution, impurities may enter the bearing and roller compaction. The vibration level depends on the number of impurity particles crushed, size, and composition is not a typical way of frequency, but to be able to hear a disturbing noise. Bearing why 'noise' the cause of the rolling bearing noise has a lot of, one is the bearing inner and outer appearance and wear. Due to the wear and tear, damaged bearing and shell, bearing and shaft cooperate relationship, invite axis deviation from the correct position, when axis at high speed movement produces sound. Metal flake when bearing fatigue, its appearance, also can make high temperature bearing radial clearance increases produce sound. In addition, the lack of bearing is smooth, dry friction, and bearing broken etc all make abnormal noise. Bearing wear loose after kuang, adhere to the looseness damage, also can produce sound. A: bearing necessary elementary school ask next: bearing steel of commonly used data type and clarify